In article ,
Martin Brown wrote:

On Fri, 28 Aug 2015 11:33:00 -0500, "JIP" wrote:

Thanks for the comment - what do you mean by "coarse sand" - is that
"builder's sand"? I understand that you can't use "lawn sand" on new
grass.

No - you want a sharp sand that is very free draining - closer to fine
grit really.

Coarse sand is known as "concreting sand" at the builder's merchants,
whereas "builder's sand" is used fro making mortar for bricklaying -
softer and finer.

Caveat: This is the usage oop 'ere in't'North -- it amy be different
further south.

Sand of either type will cost you about 3 quid per 25kg bag.

My 2p
John